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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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USGS Water-Year Summary 2024
07124410 PURGATOIRE RIVER BELOW TRINIDAD LAKE, CO
LOCATION - Lat 37°08'38", long 104°32'50" referenced to North American Datum of 1927, in NE 1/4 SW 1/4 sec.27, T.33 S., R.64 W., Las Animas County, CO, Hydrologic Unit 11020010, on left bank of dam outlet 500 ft downstream from base of Trinidad Dam, 0.8 mi upstream from Santa Fe Railroad bridge, and 3.0 mi southwest of courthouse in Trinidad.
DRAINAGE AREA - 673 mi².
REVISIONS HISTORY - WDR-US-2011: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - December 1976 to current year.
GAGE - Water-stage recorder with satellite telemetry, and concrete control. Datum of gage is 6,073.64 ft above NGVD of 1929 (levels by U.S. Army, Corps of Engineers). A supplementary water-stage recorder about 1,000 ft downstream, at same datum, is used when flows exceeded approximately 900 ft³/s.
REMARKS - Water year 2014; no estimated daily discharges. Records good except for flows below 0.5 ft³/s, which are poor. Water year 2015; no estimated daily discharges. Records good except for flows below 0.5 ft³/s, which are poor. Water year 2016; no estimated daily discharges. Records good except for flows below 0.5 ft³/s, which are poor. Water year 2017; records good except for flows below 0.5 ft³/s and estimated daily discharges, which are poor. Water year 2018; records good except for flows below 0.5 ft³/s, and estimated daily discharges, which are poor. Water year 2019; no estimated daily discharges. Records good except for flows below 0.5 ft³/s. Water year 2020; records good except for flows below 0.5 ft³/s, and estimated daily discharges, which are fair. Water year 2021; records good except for flows above 500 ft³/s and below 0.5 ft³/s, and estimated daily discharges, which are poor. Water year 2022; no estimated daily discharges. Records good except for flows above 500 ft³/s and below 0.5 ft³/s, which are poor. Water year 2023; records good except for flows above 500 ft³/s and below 0.5 ft³/s, and estimated daily discharges, which are poor. Natural flow of stream affected by storage reservoirs, diversions for irrigation and municipal use, groundwater withdrawals, and return flows from irrigated areas. Flow completely regulated by Trinidad Lake (station 07124400) immediately upstream since Aug. 19, 1977.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 2,040 ft³/s (estimated), May 11, 2017, no associated gage height due to gaging station unable to gage flows higher than about 1000 ft³/s, due to a hydraulic jump at the control.
